Envelop



No. 753,333. PATENTED MAR. 1, i904.

' L. 0. VANDERLIP.

ENVELOP.

V APPLIUATION rum) um; 19, 1903. x0 MODEL.

Patented March 1, 1904.

PATENT .OFFICE.

LOUIS C. VANDERLIR OF ELKHART, INDIANA.

ENVELOP- SPECIFICATION forming part of' Letters Patent No. 753,333. dated March 1, 1904.

Application filed January 19, 1903. Serial No. 139,636. (No model.)

To ctZZ whom it may concern:

Be it known that I, LOUIS C. VANDERLIP, a citizen of the United States, residing at Elkhart, in the county of Elkhart and State of Indiana, have invented certain new and useful Improvements in Envelops; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to envelope, and has for its object to provide a simple, cheap, and efficient envelop in which circulars, catalogues, and articles of reasonable weight may be placed and carried through the mail with perfect safety to the contents thereof and yet permit a ready inspection and examination of its contents by the postal authorities and the opening and closing of same whenever necessary.

With these general objects in view the invention consists in an improved safety-envelop embodying certain novel features and details of construction, as hereinafter fully described, illustrated'in the drawings, and incorporated in the claims. 1 I

In the accompanying drawings, Figure 1 is a perspective view of the envelop in the fin ished state. Fig. 2 is a perspective view of the cut-out blank from which the envelop is made. Fig. 3 is a sectional view showing the tongue-section folded into retaining-pocket.

The improved envelop contemplated in this invention is formed in one piece from a single blank of paper or any suitable material.

Referring to the drawings, the envelop com prises the main or body section 1, a back piece and tongue-section 2, the tongue being formed by and at the termination of said back piece 2 and by the cuts 8 and 9, which are provided,

in the back piece 2 to facilitate the operation .of the tongue backward and forward when same is to be drawn from or inserted in the pocket hereinafter inenfioned. Said back piece and tongue-section 2 is adapted to be folded over upon the main or body portion 1 along the line 12, the said cuts 8 and 9 being designed to register with the points 18 and 19 of the side flaps 4 and 5 when all the said parts are in their normal positions. At opposite sides of the main body 1 are longitudinal flaps 4 and 5, having thereon as extensions the pointed pieces 10 and 11, adapted to be folded over with said flaps 4: and 5 along the lines 13 and 14 and pasted to the exterior of said back piece 2 and immediately back of said cuts 8 and 9 to serve as a reinforcement and prevent the paper from tearing along said cuts 8 and 9 when said tongue is operated either to insert or withdraw same from pocket. 20 and 21 are confining or reinforcing flaps adapted to be folded over upon end of the back piece 2, as hereinbefore mentioned. The object of the flaps 20 and 21 is to reinforce and stiffen the body of the envelop at the points woe to prevent same from tearing, said flap being pasted to the body portion 1. This pocket is clearly shown in the sectional drawing Fig. 3.

The envelop above described is very simple in construction, is formed in a single piece, I

springs, button, or metal fasteners, which add weight and expense to the completed article. It should be understood that the envelop is susceptible of changes in the form, proportion, and minor details of constrution, which may accordingly be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

Having thus described my invention, what is claimed as new is 1. An envelop comprising a body portion, a back piece having a tongue adapted to be folded over the body portion, a pocket at one end of the body portion to receive the tongue, and reinforcing side flaps pasted to the body portion and extending beyond and forming a continuation of the pocket to strengthen the body portion between the pocket and the tongue.

2. An'envelop comprising a main or body portion, a back piece provided with slits to form a tongue, apooket at one end of the body I and requires no attachments in the nature of I portion, side flaps on the body portion having extensions adapted to be pasted to the back piece in the rear of the tongue, the extensions so formed that when folded they aline with the slits in the back piece and extend transversely beyond the same to reinforce the divisionpoint of the tongue and back piece.

3. A blank for the manufacture of an envelop comprising a main or body portion 1, an end flap 3 and reinforcing-flaps 20 and 21, adjoining side flaps 6 and 7, a back piece or tongue-section 2 provided with slits 8 and 9, side longitudinal flaps 4: and 5, provided with reinforcement extensions 10 and 11, which extensions are folded over upon the back piece so as to register with slits in the same.

4:. An envelop comprising a main or body portion provided with a pocket at the end thereof, reinforcernent-flaps forming a continuation of said pocket, a back piece provided with slits to form a tongue, side flaps on the body-section provided with extensions, the extensions so formed that when folded they aline with the slits in the back piece and extended transversely beyond the same to reinforce the division-point of the tongue and back piece.

In testimony whereof I aflix my signature in presence of two witnesses.

LOUIS C. VANDERLIP.

Witnesses:

GEORGE OLTSCH, MAGGIE OLTSCH. 

